In assets\data\races.gd says under farming_cloth_silk that the workstat is wits (This is the tooltip.)
But in assets\data\Items.gd , under clothsilk the workstat is physics. So the tooltip is technically incorrect, but until the developer states their intentions it could well be that the the mistake is in the Items.gd file and it's supposed to use wits. However based on all collections/hunting/farming etc. except for Fishing using Physics, I'm going assume the tooltip is the incorrect one for now and edit the races.gd file accordingly.